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HARD WICKE 'S S CI EN CE-GO SSI P. 



T. W. D. — The reason your reply was not inserted is, that 

 the number was made up for the printers before your MS. 

 arrived. 



J. B. — R. Damon, of Weymouth, would supply you with 

 any species of foreign shells you may require. 



R. H. Stevens. — The mineral sent is a lump of Calcite, or 

 Calcic Carbonate, which assumes an enormous number of crys- 

 tallized forms. 



To Authors. — We have numerous manuscripts standing 

 over, all of which are desirable articles ; but as we can only in- 

 sert a certain number each month, we are obliged to hold them 

 over at our discretion. Should any writer desire his returned, 

 we shall be happy to return it (if he cannot wait) on receipt of 

 postage. 



Miss A. W. — The fungus sent is Agarkiis pyocenis, an 

 edible species. After Cook's " Plain and Easy Account of 

 British Fungi," you had better get his " Manual of British 

 Fungi," in i vols., published at a guinea, by Macmillan. 



W. A. Clarke. — Your caterpillar had taken advantage of its 

 dry journey by post to us to partially enter into the chry-salis 

 stage. It is the caterpillar of the Poplar Hawk-moth {Siiic- 

 rhtthiis populi). 



F. Ram. — Your fungus is undoubtedly a specimen of the 

 Great Puff-ball (Lycoperiion gigunteuiii). It is not uncommon 

 in the Eastern counties, although rarer outside. We have seen 

 several this summer quite as large as that you describe. 



G. F. Benjamin. — There is no doubt your specimen is that 

 of the Great Green Grasshopper {Acrida vi>-idissiiita). 



A. G. A. — The objects on the back of leaf sent to us are not 

 /uiigi, but "oak-spangles," formed by an insect, a species of 

 Cyiiips. See " Half-Hours in the Green Lanes," pp. 196 and 

 197. 



EXCHANGES. 



For fac-simile of " Warrant to Execute Charles I.," send rare 

 British birds' eggs. — J. A. Wheldon, South Parade, North- 

 allerton. 



Wanted, Nos. 7, 9, lO, n, 14, 15, 16, and 17 of the " Ento- 

 mologist's Monthly Magazine " (the first four belonging to the 

 first volume, and the others to the second volume). For 

 numbers of the third volume, microscopic slides, or cash, or 

 would like the first and second volumes, or either of them. — 

 C. F. George, The Grove, Kirton Lindsey. 



For Donnx anatiniis, Venus exoleta, Nassa reticosa. Pur- 

 pura litpillus, Trochus cinereus, or Limnca stagualis, send any 

 Land or fresh- water shell to A. H., Springfield House, Spring 

 Bank, Hull. 



L. C— 7th ed. — Nos. 181, 812, 858, 923, 986, 1054. 1128, 1263, 

 1274, 1281, 1318, 1595. For Nos. 2, 3, 4, 15, 17, 286, 287, 420, 

 4201^, 421, 432, 433, or others, J. Comber, Southgate House, 

 Winchester. 



Good specimens of P. Machao», C. Hyale, C. Eiiiisa, A. 

 Adippe, T. quercus, &c., for G. allunn, M. homhyliforiiiis, M. 

 fucijorjiiis. P. comma, &c. — Address, H. T. Preston, Esq., 

 Heatherfield, Bournemouth, Hants. 



For slide of Diatoms, send slide of interest or material — 

 deep-sea soundings preferred — to T. Comlidge, 5, Norfolk- 

 street, Brighton. 



White's " Natural History of Selborne," Bohn's edition. 

 Wanted, live Lizards, or Lepidoptera. — J. E., 21, Dorset- 

 road, Anfield, Liverpool. 



Wanted, samples of New Nottingham and other good foreign 

 Diatomaceous deposits. Two co. Antrim Earths and well- 

 mounted Slides to offer in e.xchange. — Communicate with W. A. 

 Firth, Whiterock, Belfast. 



Wanted, Nos. 141, 1244, 1247, 1494, 1418, 731, for Nos. 

 1220, 1221, 1222, 1223, 1229, 1248, or Charus. — Rev. F. H. 

 Arnold, Fishbourne, Chichester. 



For pieces oi Fhtstrafoliacea and Peacock Copper-ore, send 

 stamped directed envelope, and Diatoms or other unmounted 

 object, to G. W. Harfield, 24, Ryde-villas, St. Mary's-road, 

 Pcckham, .S.E. 



Wanted, Nos. 191, 560, 714, 386, for other plants. — Address, 

 M. King, 120, Pitt-street, Bonnington, Edinburgh. 



R.\Rii Lias Fof,s\\s{Mo)itin'aitia, Victoria iiiucrotiata, Wal- 

 d/icimia Lycetti, &c.), for books, papers, or magazine articles, 

 on Lias. — W., 72, High-street, Banbury. 



V)vv\-\ZKY'e.i,: — Polychloros, lo, Z. trifoUi. Filipenduhr, 

 and L. dispar. Desiderata, very numerous to end oi Noctute. 

 — H. Jones, Hawley, Farnborough Station. 



A REAL Colorado Beetle sent in e.xchange for any good En- 

 tomological Slide. —J. C. T., 4, Lord-street, Liverpool. 



" Ho(;g on the Microscope," and Mahogany Section-cutter, 

 faced and lined with brass, for Carpenter's " Microscope and 

 its Revelations," 2-inch Objective, Compressorium, or Double 

 Nose-piece, &:c. Will pay cash for e.xtra value, if any. List 

 of du])licate mounted Microscopic objects exchanged. — H. Mor- 

 land, Cranford, Middlesex. 



London Catalogue, 7th ed.— Nos. 3, 97, i3of, 185, 206, 218, 

 361, 386, 515, 608, 753, 831, 944, 1059, 1092, 1263, 1516, 1537, for 

 others. — Thomas Whitelegg, 58, Hillgate-street, Hurst Brook, 

 Ashton-under-Lyne. 



DtrPLlCATES : — Edusa, Cardui, Atalanta, lo, and Dispar 

 (bred). — Desiderata: — Sinapis, Cratcpgi, Paphia, Aglaia, 

 Adippe, Lucina, Artemis, T. quercus, Betuke, Rubi, Adonis, 

 Argiolus, Alsns, /^gon, Conitiia, and Alveolus. — J. B. Pilley, 

 2, High Town, Hereford. 



So.ME splendid living Chrysalides of Death's-Head, Aclieron- 

 tia Atropos'\ to exchange for Microscopical injections. — W. 

 Lane, Sear, Margate. 



For slide of Diatoms, send object of interest, mounted, or 

 good material, to T. Comlidge, 5, Norfolk-street, Brighton. 



DiATOMACEA, slides of, to exchange for injections or others. 

 — T. B., 7, Spencer-street, London, E.G. 



Wanted to borrow for a short time, "Entomologist's Monthly 

 Magazine," vols, i, 3, 4, 5, and 6 ; Newman's " Entomologist," 

 the first 4 vols. ; the whole series of the " Naturalist," conducted 

 by the Rev. F. O. Morris. — W. Denison Roebuck, 9, Sunny 

 Bank, Leeds. 



Live Moles wanted by J. E. Palmer, Lucan, co. Dublin. 



Duplicates. — Edusa, Cardamiiies, JEgeria, Semele, Ata- 

 lanta, Polychloros, Paphia, Adippe, Jacobcea, Pyraviidea, 

 Sponsa, &c. — Desiderata : — Local Diurni, Ocellatus, Tilice, 

 Atropos, the Sesindrr, many Noct7ier, and Geometry. — H. C. 

 Dent, 20, Thurloe-square, London, S.W. 



London Catalogue, 7th ed. — Offered, Nos. 335, 370, 372,. 

 457. 568, 593, 598, 600, 76c, 831, 999, 1140, 1265, 1282, 1327, 

 1387, 1480, for Nos. 32s, 360, 367, 396, 566, 594, 588, 590, 746, 

 832, 1000, 1141, 1301, 1287, 1339, 1388, 1515.— E. D. C, 25, 

 Oxford-road, Kilburn, London. 



Barbadoes Earth, from Cambridge Estate, rich in Polycis-- 

 tina and Spicula, in exchange for first-class Balsam-mounts, at 

 the rate of six slides per ounce. — Dr. Grifilin, 66, Kingsdown 

 Parade, Bristol, 



H. ericitomm, for other land or fresh-water shells ; or /«» 

 thina communis ; latter especially desired. — J. B., 9, Royal- 

 teriace West, Kingstown. 



Want to exchange good Limestone Corals for any other 

 good fossil. — J. Mackenzie, Nursery Cottage, Huddersfield. 



London Catalogue, 7th ed. —Nos. 81, 82, 97, 98, 100, in. 

 133, 141, 144, 177, 258, 280, 319, 354, 1342, 1340, 1447, 1448, 

 1502, &c., for other rare Plants, Mosses, or British Shells. — 

 Lists to W. E. Green, 24, Triangle, Bristol. 



Wanted Silurian and other Fossils. Geological exchange 

 given. — Address, J. T. A., The Quay, Selby, Yorkshire. 



O.NE or two dried specimens of the Menziesia cccrulea and' 

 other Highland plants. I wish rare English plants in exchange-. 

 — k.. Crawfurd, Norwood Lodge, Bridge of Allan, N.B. 



Strong-rooted leaves of various Gloxinias and seedling 

 Streptocarpus bijlorus, in exchange for other stove subjects, 

 cuttings or otherwise ; also some Achimenes bulbs. — G. Pim, 

 Monkstown, co. Dublin. 



Will send Wings of Wasp (hooked together), Phragtnidiuvf 

 bullosum, &c., in e.xchange for other mounted micro, objects. 

 — H. Stily, High-street, Yeovil, Somerset. 



Duplicates.— .,4rt'/>>/^, Aglaia, Paphia, Sibylla, and Hu- 

 muli. — Desiderata :— Hyale, Cassiope, Orion, Paniseus, Acteon,. 

 and many others.— C. Malyon, Lewisham, S.E. 



BOOKS, &c., RECEIVED. 



' American Naturalist." September 



' Potter's American Monthly." 



' Scottish Naturalist." 



' The Naturalist." 



' Popular Science Review." 



' Monthly Microscopical Journal 



' Land and Water." 



' F'euille des Jeunes Naturalistes 



' Ben Brierley's Journal." 



&c. &c. &c. 



October. 



Communications have been received ur to the 9tk 

 ult., from :— F. K.— T. S.— J. C— W. G.— Dr. J. H. G.— A. H. 

 — C. F. G.— H. T. P.— F. W. B. N.— J. A., jun.— J. W. S.-- 

 W. H. W.— W. H. G.— E. W. W.— J. M. W.— J. C— E. L. R. 

 — H. C. D.— A. W.— R. L.— J. A. W.— M. M.— H. W. K.— 

 W. E. G.— R. J. G.— J. F. P.— T. S.— F. K.— S. C. S.— T. L. 

 -C. T. M.— F. A. A.— J. C— J. H. R.— A. P.— J. C— 

 R. H. M.— S. A. B.— E. E.— T. B. W.-C. N.— C. R. V.— 

 T. B. P.— J. L.— M. T.— W. J. H.— H. P. M.— J. E.— W. A. F. 

 — F. H. A.— G. W. H.— M. K.— H. J.— H. M.— J. C. T.— 

 W. L. S.— T. W.— J. B. P.— T. C— J. B.— W. D. R.— J. A., 

 jun.— C. B.— R. A. — H. P.— E. W. W.— E. E.— W. J. B.— 

 C. W.— M. J. W.— A. W.— G. O. H.— C. B.— H. T.-J. E. P. 



—J. W. C— J. T. T. R. Dr. F. V. P.— C. M.— Dr. E. D. C. 



— S. E. B.— H. C. D.— G. C— S. B.— J. M — T. W. D.— 

 T. B. W.— R. W. C— E. F. C— F. W. G.-J. B.— Dr. G.— 

 A. B.— W. S. G.— J. J. M.— W. V. A.— J. R. N.— F. R.-- 

 Capt. T. W. B.— J. T. A.— J. C— R. H. S.— G. P.— M. M. 

 — W. A. C— J. F. R.— H. W. K.— A. C. -A. G. A.- G. F. B. 

 — H. S.— H. M.— H. R.— R. T. G.— E. L.— A.S.— R. S. M. G., 

 &c., &c. 



